Easy Pick Blue

Q: Could you wash these and reuse them since they are plastic coated silicone?

Yup. Do it all the time. There is a soft nubby sheath over the hard white plastic center. Until that wears out (you'll know), keep using it. They last longer if you have perfect teeth. If you have a lot of crowns, to catch at the nubby sheath & tear it, they wear out faster.

Q: How many are in pack?

There are 36 in the pack and a hard plastic case

Q: Are these recyclable or can they only be disposed in the rubbish?

The instructions I have for recycling in my area definitely don't allow silicone. They also don't allow anything that small in the bin, the sorting machines don't work with little things like that.